It's a multi-strap from KAI.
Perfect match with the official penlight ☆
It's a convenient item that can be used in a variety of other ways, such as attaching a key to it and connecting it to a belt roof, or attaching it to a carry-on bag as a marker!

【size】
Width approx. 25mm x total length approx. 300mm (including parts)

【material】
PP, alloy, iron

【country of origin】
China